30 P. A. øyen [No. 12 



We are, however, to extend our researches towards the 

 east and north in order to obtain some connection with the 

 fossil-bearing deposits of these neighbouring districts and in order 

 to get a clew to a comparison with deposits and terraces of the 

 more central region and at the same time to obtain further 

 evidence for a more general correlation. 



To the east, in the surroundings of the sluices of Ørje, we 

 meet with some frontal moraines, only rather slightly developed, 

 across the valley near the lower end of the lock. These mo- 

 raines are resting upon a conspicuously ice-scratched rock that 

 is nicely furrowed and striated in the direction of the lake ltself. 

 Terraces are met with as well higher up the valley as lower 

 down. Alongside the Lake of Ørje we are looking upon rather 

 regular terraces bordering the lake depression and rising to about 

 the same height on both sides of the lake. Øn the west side of 

 the lake near to the southern end of it the clay-pits of the 

 brick-work of Ørje have been sunk in to the terrace in that place 

 as represented in Pl. VIII, Fig. 1. The terrace in this district 

 rises to about 135 m. a. s., the clay-deposit of the tile-work itself 

 lying some ten metres lower down. On a former occasion 

 (P. A. Øyen: Nogle bemerkninger om Ra-perioden i Norge, 1911, 

 pp.30— 31) I have given a sketch of part of this clay-deposit that 

 proves to have been laid down in quite regular layers of a periodic 

 character as may also be seen in the photograph Pl. VIII, Fig. 2. 

 This clay-deposit might in some of the clay-pits be traced to a 

 thickness of about four metres, the lower two metres consisting 

 of rather fine clay somewhat mixed with very fine sand and 

 being of a bluish-grey or yellowish-grey colour alternating and 

 conspicuously waved or even streaked as represented in the above 

 mentioned picture (I. c, p. 30). Sometimes, clay-concretions of a 

 cylindrical shape or of a centric structure may be seen within the 

 clay-layers. No reaction to HC1 is to be observed. In this clay 

 casts of some fossils were found, viz. — 



Area glacialis Gray in a relatively high type of length 

 15 mm. The radiating ribs were rather small and striation 

 nicely developed. 



